Yep the code shows all the column headers are included so if you don't see them something is wrong:
std::vector<std::string> model_header_cols{ "Model Name", "Shadowing", "Description", "Display As", "Dimensions", "String Type", "String Count", "Node Count", "Light Count", "Est Current (Amps)", "Channels Per Node", "Channel Count", "Start Channel", "Start Channel No", "#Universe(or id):Start Channel", "End Channel No", "Default Buffer W x H", "Preview", "Controller Ports", "Connection Protocol", "Connection Attributes", "Controller Name", "Controller Type", "Protocol", "Controller Description", "IP", "Baud", "Universe/Id", "Universe Channel", "Controller Channel", "Active"};